This is the American spelling. British English writes manoeuvrable. The two spellings mean the same thing.

If something is maneuverable, you can move it and turn it quite easily. People say it most about things that have to change direction in a tight space: a small car in a full car park, a boat in a narrow river, a plane, a drone, a wheelchair, a suitcase on wheels. A vehicle that is not maneuverable feels heavy and clumsy; you need a lot of room to turn it.

You also hear it, a little more loosely, about plans, teams, or robots that can change direction fast. It is not a child’s everyday word. You meet it in car reviews, army and police reports, and instruction books. In casual talk many people just say easy to turn or easy to handle.